Rigid pipe-union.



1.]. DELEHANTY.

fiiGiD PIPE UNION.

MPUCATIUN HLED 3ML3I. 1914.

1 ,270,021 Patented June 18, 1918.

JOHN J. DEMY, oi-r10.

ifhallu km t fimiay eowcem iBe it lmownetlnt L il er'm di m' n ssas nassassinsstem 1 worwoutlflin the eoinrty {and State of Ohio, have inient'eli eefifiii filew ms ts 'Rig'iil iP'ipe- Unions,iif iiiiiiih tife fiillowna gee enwieeea s r s n ilndhe Htti'n an: it we e? 3* i1 un V 1m ne e to 'spi-fingnlre ipes "but ef and put on a right and left coupling, union firhicli i (slighey flexible, screwing same up tight and gradually drawing the P p back into Panties lik if s of the pipe for ;ion or right and left coupi hfgfiiittfi is' n fiiflicult i esp c Krem n fit n 5 s e T, L, etc, "svsteen p lace d w filfofitdfifi means of springing, which occurs quently.

My invention overcomes this disadvantage in pipe fitting and renders it an easy task to insert the union for connections whether a desired fitting has to be placed or not. In other words, it simplifies greatly the tying in of two ends of pipes and makes a strong, durable, and efiicient joint, and one which is rigid and not likely to look as the ordinary flexible ones do.

My invention consists in providing threaded coupling sleeves mounted on two threaded coupling members or threaded terminal unions, one of these threaded coupling members being placed on the free ends of the pipes to be joined and being maintained in alinement and fastened together by means of the sleeve which has a ground joint at one end which engages a ground surface on the coupling at the correspondin end.

In the accompanying sheet 0% drawings which shows a preferred construction:

Figure 1 is a view of a pipe, supposed to be in place or in use, and showing my im- 1 i; I y risms T V nremnnrnumoiif fis e em f liatentediilnnedgllms.

np nehmemawan srysmsfi. -esrmrmeieis oca. 7 r

presed nnion "in phase etterjhe therein: 1:-

sf inssrtingisame in tireipipe andthe which it may iiee npplictl. 3 is lsntiien siniiinr sherentire coupling in seetibn and :p'ipe snii 'the {coupling met "yet r 7 i i'gz k shews the i proved unionitse lf i lre siesye lfieisigdn sention. V

' -Fig. 5 shesssgnieemml viewer the ordinary flarlilleninon in iexnnmon usemnwi 1 Refining fli'neiperticularly to the illllfifihiigs a 'pi e hsvieg n ieibewfl and an diifiw -g the assumed to begeuiecdise in use; "tofi ignl lt wllihe ssenitnst insrdM thB PiP'eELtMt saiu' pipe ninst fist he ent; Assuming *the Q awash udin aeiese new s eieegnsenss elmu m sameness!) fiew iifliu eheas the elbowsare usually fixed in position, it is "the" 'i' 'e to allow the remaiiid e fif it ti: be fastened properly to the T 4 and the elbow 2. So it is the custom for the fitter to insert a flexible union such as shown in Fig. 5, or some other suitable fitting of the ordinary construction such as a right and left coupling or the like in the pipe 1 between the elbow 2 and the T 4. To do this the pipe is out again at the point of inserting the union and thereby divided into the pieces B and C. One side of the union is then fastened to the piece B, and the other to piece C by springing the pipe out of alinement, to allow the thread to enter L 2 to take hold. It will be noted also in the particular fitting such as the union shown in Fig. 5 that said union is flexible on the movable ground joint. This is very often a most diflicult job and is a disadvantage which this invention overcomes.

For the purpose of best describing my invention we will assume that the T 4 has already been inserted in the pipe 1 and the portion A is mounted in the elbow 3. And we will also assume that the portion B of V fig. 2 's' a se eiiennl uiewfilint wviihthe frienfiparfliy' iin seetien, ane :si'eowing the shewing the pipe 1 has been screwed into the T 4 as shown in Fi 2, the ends of all the portions or sections 0 pipes A, B, and C having been threaded properly, and of course thepipe having been out at the point at which the union is to be inserted.

That portion of the pipe 1 shown at C is then gaged in length as s own in Fig. 2 and the ends then threaded at 5 and 6. The coupling member 7 is then screwed on the threads 6 before the pipe O is in place, and the coupling or union sleeve 8 is first placed on the coupling member 7. After this is accomplished the coupling member 9 must be placed on the pipe section B, pipe B being threaded at 10 to receive same. When this has been done the pipe 0 is ready to be placed in position and by referring to Fig. 2 it is seen just what position the pipe will assume, and it will be evident that no springing of the pipe will be necessary. Now the threads 5 on pipe 0 are screwed into the elbow 2 bringing pipe G into the position shown in Fig. 3. ter this is accomplished the coupling sleeve 8 is screwed into the position shown in Figs. 1 and 4:, where it is also seen that the ground portions 11 and 12 on the coupling sleeve and coupling member 7 respectively, engage each other making a tight and secure fitting and one which cannot work loose and wear out as in the ordinarily constructed union.

Referring to Fig. 5, the old construction is shown and it will be noted that the ground joint 15 is a little flexible when the union is loose, and when tightened it is always subject to a little wear and soon destroys the tight fit and renders the union useless, in

Copies of this patent may be obtained for five cents each, by addressing the fact, in certain kinds of work the unions made in this fashion are not allowed to be used, due to its liability of becoming loosened.

With my improved union in use, this disadvantage is overcome, and also those disadvantages of installing unions, and my union also forms a safe, tight fitting, rigid and durable union for all purposes.

Thus it is seen that my improved union can be used to the same advantage as the present flexible union, flange union, right and left coupling, etc., that are now in use.

What I claim as new and desire to secure by Letters Patent is:

A pipe coupling adapted to be interposed between two pipe members without distort ing the latter comprising two externally and internally threaded terminal members and an internally threaded sleeve adapted to be mounted on one of said members, said sleeve having a reduced opening at one end and an inclined annular wedge surface therearound, a similar inclined annular wedge surface at the rear of the terminal member upon which the sleeve is to be mounted, said terminal members adapted to be screwed in spaced relation upon opposing ends of pipe members, said sleeve being adapted to screw upon both terminal members and to bridge the space between them, the said wedge surfaces being adapted to engage each other to prevent leakage.

JOHN J. DELEHANTY.

Witnesses:

LEANDEB D. Onrvm, HARRY BRUNNEB.

Commissioner of Patents,

Washington, D. 0. 

